494 



INDEX. 



South Seas, 391; called also 

 Mouna Loa, 391; its lava-lake 

 of Kilauea, 393. 



Maypu, volcano of, 289. 



Medina, volcano of, 356. 



Meligunis. See Lipari. 



Methone, volcanic phenomena of 

 the peninsula of, 229. 



Mexico, list of elevations of the 

 table land of, 408 ; volcano of, 

 402 ; considerations on the 

 mountain chains, 405. See also 

 New Mexico. 



Mica, 473. 



Micuipampa, mean annual tempe- 

 rature of, 41, 42. 



Middendorf's two Siberian expe- 

 ditions, 43 ; on the frozen soil 

 of Northern Asia, 47. 



Minchinmadom, volcano of, 290. 



Mines, observations in, on mag- 

 netic dip and intensity, 116. 



Mitscherlich on the minerals of the 

 Eifel, 235 ; on the melting point 

 of granite, 246. 



Mofette-grottoes of Java, described 

 by Junghuhn, 220. 



Momay, hot springs of, 197. 



Momobacho, the volcano, 273. 



Momotombo, the volcano, 274. 



Monkwearmouth, the coal mine at, 

 37. 



Mont Blanc, the Grand Plateau 

 of, 231. 



Mont Pelvoux, the highest summit 

 of the French Alps, 230. 



Monte del Diablo, in California, 

 416. 



Moon, extent of our acquaintance 

 with the surface of the, 448; 

 volcanoes and parasitic craters, 

 449 ; magnetism of the Kreil 

 on the, 85 ; investigation of 

 the subject by General Sabine, 

 viii. 



Mormons, Great Salt Lake of the, 

 410. 



Mortero, Cerro del, 321. 



Mosenberg, the, an extinct vol- 

 cano, 232, 238. 



Mosychlos, the mountain, destruc- 

 tion of, 349. 



Mouna Loa. See Mauna Roa. 

 Mountain masses, magnetism of, 



159. 

 Mountain peaks, comparison of, 



with the bulging of the earth's 



surface, 28. 

 Mousart (corruption of Muztag), 



equivalent to Sierra Nevada, 



434. 



Moya cones of Pelileo, 172, 216. 

 Mud-springs of Iceland, 212. 

 Mud- volcanoes, 217, 379. 

 Murchison, Sir R., on eruptive 



trap masses, 350, 483. 

 Muriatic acid fumaroles, 424. 

 Mutis, apparatus of, 459. 



Naphtha springs, 207. 



Negropont. See Eubcea. 



Neptune, connexion of, with earth- 

 quakes, 179. 



New Britain, volcanoes of, 396. 



New Caledonia, volcanic action 

 absent from, 398. 



New Guinea, volcanoes of, 396. 



New Mexico, barometric levellings 

 in, 407; list of heights, 408. 



New Zealand, geology of, 396; 

 volcanoes, 397. 



Niphon, recorded volcanic erup- 

 tions in, 374. 



Nodes, magnetic, their changes of 

 position, 103. 106. 



Noises from volcanoes, differences 

 observed in, 263 ; extraordinary 

 distances at which heard, 264. 



Norman, Robert, determines the 

 inclination of the magnetic 

 needle in London, 57. 



North-west America, volcanoes of, 

 403 ; hypsometry of, 408. 



No variation (magnetic), points 

 ami lines of, 54, 58. 



Obsidian, 479 ; its cavities and 



airholes, 482. 

 Oeriifa, in Iceland, fearful erup 



tions of, 351. 



